Redrawing Scene

nicromonicon

hey guys,im using OpenGl with C#..so i have this 3 circles,i want a

certain circle to be redrawn when a user selects it with mouse WITHOUT

re-drawing the whole scene, i.e.i have the following fucntion called in

paint event:

Draw_Scene()
{
Draw_Circle_1();
Draw_Circle_2();
Draw_Circle_3();
}

how can i make it re-draw circle 3 only with the rest of scene intact?

thanks in advance